524 



GLOSSARY. 



[Vol. III. 



texture and color; 



of attachment of a 



the 



Herbaceous. Leaf-like in 



pertaining to an herb. 

 Hilum. The scar or area 



seed or ovule. 

 Hirsute. With rather coarse stiff hairs. 

 Hispid. With bristly stiff hairs. 

 Hispidulous. Diminutive of hispid. 

 Hvaline. Thin and translucent. 

 Hvpocotyl. The rudimentary stem of 



embryo; also termed radicle. 

 Hypogynium. Organ supporting the ovary in 



some sedges. 

 Hypogynous. Borne at the base of the ovary, 



or below. 

 Imbricated. Overlapping. 



Imperfect. Flowers with either stamens or pis- 

 tils, not with both. 

 Incised. Cut into sharp lobes. 

 Included. Not projecting beyond surrounding 



parts. 

 Incumbent. With the back against the hypo- 



cotyl. 

 Indehiscent. Not opening. 

 Indusium The membrane covering a sorus. 

 Inequilateral. Unequal sided. 

 Inferior. Relating to an organ which arises or 



is situated below another. 

 Inflexed. Abruptly bent inward. 

 Inflorescence. The flowering part of plants; its 



mode of arrangement. 

 Integument. A coat or protecting layer. 

 Internode. Portion of a stem or branch be- 

 tween two successive nodes. 

 Introrse. Facing inward. 

 Involucel. A secondary involucre. 

 Involucrate. With an involucre, or like one. 

 Involucre. A whorl of bracts subtending a 



flower or flower-cluster. 

 Involute. Rolled inwardly. 

 Irregular. A flower in which one or more of 



the organs of the same series are unlike. 

 Labiate. Provided with a lip-like organ; be- 

 longing to the family Labiatae. 

 Laciniate. Cut into narrow lobes or segments. 

 Lanceolate. Considerably longer than broad, 



tapering upward from the middle or below; 



lance-shaped. 

 Latex. The milky sap of certain plants. 

 Leaflet. One of the divisions of a compound leaf. 

 Legume. A simple dry fruit dehiscent along 



both sutures. 

 Lenticular. Lens-shaped. 



Ligulale. Provided with or resembling a ligule. 

 Li^ule. A strap-shaped organ, as the rays in 



Compositae. 

 Limb. The expanded part of a petal, sepal, or 



gamopetalous corolla. 

 Linear. Elongated and narrow with sides 



nearly parallel. 

 Lineolale. With fine or obscure lines. 

 Lobed. Divided to about the middle. 

 Loment. A jointed legume, usually constricted 



between the seeds. 

 Loculicidal. Applied to capsules which split 



longitudinally. 

 Lodicules. Minute hyaline scales subtending 



the flower in grasses. 

 Lunate. Crescent-shaped, 

 Lyraie. Pinnatifid, with the terminal lobe or 



segment considerably larger than the others. 

 Macrosporange. Sporange containing macro- 

 spores. 

 Macrospore. The larger of two kinds of spores 



borne by a plant, usually giving rise to a 



female prothallium. 

 Marcescent. Withering but remaining attached. 

 Medullary. Pertaining to the pith or medulla. 

 One of the carpels of the Umbel- 



Mericarp. 



liferae. 

 Mesocarp. 

 Micropyle. 



The middle layer of a pericarp. 

 Orifice of the ovule, and corre- 

 sponding point on the seed. 

 Microsporange. Sporange containing micro- 

 spores. 

 Microspore. The smaller of two kinds of spore 



borne by a plant, usually giving rise to a male 

 prothallium; pollen-grain. 



Midvein {Midrib). The central vein or rib of a 

 leaf or other organ. 



Monadelphous. Stamens united by their fila- 

 ments. 



Moniliform. Like a string of beads. 



Monoecious. Bearing stamens and pistils on 

 the same plant, but in different flowers. 



Monstrous. Unusual or deformed. 



Alucronale. With a short sharp abrupt tip. 



Mucronulate. Diminutive of mucronate. 



Muricate. Roughened with short hard pro- 

 cesses. 



Mulicous. Pointless, or blunt. 



Naked. Lacking organs or parts which are nor- 

 mally present in related species or genera. 



Naturalized. Plants not indigenous to the re- 

 gion, but so firmly established as to have 

 become part of the flora. 



Nectary. A sugar-secreting organ. 



Node. The junction of two internodes of a 

 stem or branch, often hard or swollen, at 

 which a leaf or leaves are usually borne. 



Nodose. Similar to nodes or joints; knotty. 



Nodulose. Diminutive of nodose. 



Nut. An indehiscent one-seeded fruit with a 

 hard or bony pericarp. 



Nutlet. Diminutive of nut. 



Obcordate. Inversely heart-shaped. 



Oblanceolale. Inverse of lanceolate. 



Oblong. Longer than broad with the sides 

 nearly parallel, or somewhat curving. 



Obovate. Inversely ovate. 



Obovoid. Inversely ovoid. 



Obsolete. Not evident; gone, rudimentary, or 

 vestigial. 



Obtuse. Blunt, or rounded. 



Ochreae. The sheathing united stipules of 

 Polygonaceae. 



Ochreolae. The ochreae subtending flowers in 

 the Polygonaceae. 



Ochroleucous. Yellowish white. 



Oosphere. The cell of the archegone which is 

 fertilized by spermatozoids. 



Operculate. With an operculum. 



Operculum. A lid. 



Orbicular. Approximately circular in outline. 



Orthotropous. Term applied to the straight 

 ovule, having the hilum at one end and the 

 micropyle at the other. 



Ovary. The ovule-bearing part of the pistil. 



Ovate. In outline like a longitudinal section of 

 a hen's egg. 



Ovoid. Shaped like a hen's egg. 



Ovule. The macrosporange of flowering plants, 

 becoming the seed on maturing. 



Palate. The projection from the lower lip of 

 two-lipped personate corollas. 



Palet. A bract-like organ enclosing or subtend- 

 ing the flower in grasses. 



Palmate. Diverging radiately like the fingers. 



Panicle. A compound flower cluster of the 

 racemose type, or cluster of sporanges. 



Paniculate. Borne in panicles or resembling a 

 panicle. 



Papilionaceous. Term applied to the irregular 

 flower of the Pea Family. 



Papillose. With minute blunt projections. 



Pappus. The bristles, awns, teeth, etc., sur- 

 mounting the achene in the Chicory and 

 Thistle Families. 



Parasitic. Growing upon other plants and ab- 

 sorbing their juices. 



Parietal. Borne along the wall of the ovary, or 

 pertaining to it. 



Parted. Deeply cleft. 



Pectinate. Comb-like. 



Pedicel. The stalk of a flower in a flower- 

 cluster, or of a sporange. 



Peduncle. Stalk of a flower, or a flower-cluster, 

 or a sporocarp. 



Pedunculate. With a peduncle. 



Peltate. Shield-shaped; a flat organ with a 

 stalk on its lower surface. 



